From: Florian Fainelli Date: Fri, 18 Jul 2025 21:22:42 +0000 (-0700) Subject: net: bcmasp: Restore programming of TX map vector register X-Git-Tag: v6.16~15^2~11 X-Git-Url: http://git.ipfire.org/?a=commitdiff_plain;h=18ff09c1b94fa1584b31d3f4e9eecdca29230ce5;p=thirdparty%2Flinux.git net: bcmasp: Restore programming of TX map vector register On ASP versions v2.x we need to program the TX map vector register to properly exercise end-to-end flow control, otherwise the TX engine can either lock-up, or cause the hardware calculated checksum to be wrong/corrupted when multiple back to back packets are being submitted for transmission. This register defaults to 0, which means no flow control being applied. Fixes: e9f31435ee7d ("net: bcmasp: Add support for asp-v3.0") Signed-off-by: Florian Fainelli Link: https://patch.msgid.link/20250718212242.3447751-1-florian.fainelli@broadcom.com Signed-off-by: Jakub Kicinski --- diff --git a/drivers/net/ethernet/broadcom/asp2/bcmasp_intf.c b/drivers/net/ethernet/broadcom/asp2/bcmasp_intf.c index 0d61b8580d72b..f832562bd7a3e 100644 --- a/drivers/net/ethernet/broadcom/asp2/bcmasp_intf.c +++ b/drivers/net/ethernet/broadcom/asp2/bcmasp_intf.c @@ -818,6 +818,9 @@ static void bcmasp_init_tx(struct bcmasp_intf *intf) /* Tx SPB */ tx_spb_ctrl_wl(intf, ((intf->channel + 8) << TX_SPB_CTRL_XF_BID_SHIFT), TX_SPB_CTRL_XF_CTRL2); + + if (intf->parent->tx_chan_offset) + tx_pause_ctrl_wl(intf, (1 << (intf->channel + 8)), TX_PAUSE_MAP_VECTOR); tx_spb_top_wl(intf, 0x1e, TX_SPB_TOP_BLKOUT); tx_spb_dma_wq(intf, intf->tx_spb_dma_addr, TX_SPB_DMA_READ);